Home / 4,081.68-6,105.60-2,780.28

Finding the Fourth Proportional to 4,081.68, 6,105.60 and 2,780.28

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Solution

The fourth proportional to 4,081.68, 6,105.60 and 2,780.28 is: 4,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.68 : 6,105.60 = 2,780.28 : x
  2. Step 2: Convert to fraction form
    4,081.68/6,105.60 = 2,780.28/x
  3. Step 3: Cross multiply
    4,081.68x = 6,105.60 × 2,780.28
  4. Step 4: Simplify right side
    4,081.68x = 16,975,277.57
  5. Step 5: Solve for x
    x = 16,975,277.57/4,081.68
  6. Step 6: Final answer
    x = 4,158.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.